He’s a compulsive complainer and Race Baiter, just like his sister! No doubt the school was thrilled to be rid of him and his wife. Even if he wins some lawsuit and gets a ‘settlement’ the school wins just by sawing that diseased branch off of their community tree. Somebody who shops for trouble.
The perpetually offended, are perpetually offended.
If these people are looking for things to offend them, they always find something.